Update .gitignore to exclude node_modules and coverage files

- Added node_modules/ to ignore list to prevent tracking of Node.js dependencies.
- Included coverage.json to ignore coverage report files, streamlining the repository.

.gitignore

@@ -25,6 +25,7 @@ wheels/
 .installed.cfg
 *.egg
 MANIFEST
+node_modules/
 
 # PyInstaller
 #  Usually these files are written by a python script from a template
@@ -41,6 +42,7 @@ htmlcov/
 .tox/
 .coverage
 .coverage.*
+coverage.json
 .cache
 nosetests.xml
 coverage.xml